MAINTENANCE AND LUBRICATION 7
en-90
7.16 HYDRAULIC HOSES
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Always lower the cutting units to the ground, disengage all drives, engage parking brake, stop the engine and remove
the key before you inspect or disconnect hydraulic lines or hoses.
Check visible hoses and tubes each day. Look for wet hoses or oil marks. Replace worn or damaged hoses and tubes
before you operate the mower.
The replacement tube or hoses must follow the same path as the original hose. Do not move the clamps, brackets and
cable-ties to a new location.
Completely inspect all tubes, hoses and connections in accordance with the maintenance chart.
IMPORTANT: If the hydraulic fluid becomes dirty, damage to the hydraulic system can occur.
Before you
disconnect any hydraulic component, clean the area around the fittings and the ends of the hoses to stop the entry of
dirt into the system.
Before you disconnect any hydraulic component, tag or mark the location of each hose then clean the area around the
fittings.
To stop the entry of dirt into the system when you disconnect the component, be prepared to assemble plugs or caps to
the ends of hoses and open ports. Clean any hydraulic fluid that spills.
Make sure “O” rings are clean and hose fittings are correctly installed before you tighten.
Prevent the hose from twisting. Twisted hoses can cause the hose connections to loosen as the hose moves while you
operate the mower and can cause oil leaks.
The hydraulic hoses that are twisted or have sharp bends can decrease the oil flow and cause damage to the hoses.
The decreased oil flow can cause system problems and increase the temperature of the hydraulic fluid.
WARNING
To prevent injury from the hot, high pressure oil, never use your hands to check for oil leaks. Use the paper or
cardboard to find leaks.
The hydraulic fluid pressure can have enough force to enter your skin. If hydraulic fluid has entered your skin,
a doctor must remove the hydraulic fluid surgically within a few hours or gangrene can occur.
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